Finding the Fourth Proportional to 1,419,121.80, 2,128,682.70 and 744,942.60
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Solution
The fourth proportional to 1,419,121.80, 2,128,682.70 and 744,942.60 is: 1,117,413.90
Step by Step Solution
- Step 1: Write the proportion equation
1,419,121.80 : 2,128,682.70 = 744,942.60 : x - Step 2: Convert to fraction form
1,419,121.80/2,128,682.70 = 744,942.60/x - Step 3: Cross multiply
1,419,121.80x = 2,128,682.70 × 744,942.60 - Step 4: Simplify right side
1,419,121.80x = 1,585,746,425,113.02 - Step 5: Solve for x
x = 1,585,746,425,113.02/1,419,121.80 - Step 6: Final answer
x = 1,117,413.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.